Validation of SMAP Soil Moisture at Terrestrial National Ecological Observatory Network (NEON) Sites Show Potential for Soil Moisture Retrieval in Forested Areas. - Edward Ayres; Andreas Colliander; Michael H. Cosh; Joshua A. Roberti; Sam Simkin; Melissa A. Genazzio (IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2021)